geraerdts



W. GERERDTS.

SHEET .LATH|NG.

APPLlIcATloN men JUNE I9. 1916. RENEWED Dec. 24, 191s.

1,3 1 129141 Patented July 29, 1919.

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Application mea :rune 19', i916',- 'seri'ai'Na 104,361.

Be itv known that I, 'l/VILLIAM GERAERDTS, aY citizen of the UnitedStates, residing at the borough of Manhattan, cityof New lYork, in thecounty of New York, andy State Aof. New York,l have inventedl certainnew and useful Improvements in Sheet-Lath-ing, ofwhich the following isa specification, refer? ence being hadtherein to the accompanyingdrawings, forming part thereof.

My invention relates to sheet lathing adapted yto be secured to thestudding of walls Vand to c'eiling'beams forholding the" plaster, andparticularly to such ing made of sheets of paper or other suitablefibrous material held together by a suitable adhesive and havingmetallic stiening and strengthening means.

A particular object of my invention is to provide sheet lathing whereinthe strengthening means are also highly effective as stiffening meansand may be easily and simply applied tothe fieXible sheets without the 1use of prongs or fasteners, and will be securely held to the flexiblesheets. Another object of my invention is to utilize the strengtheningand stiiening means for the purpose of securely holding the plaster tothe sheet lathing. Other objects and advantages of my invention willhereinafter appear. y v

I shall now describe my invention with reference to the accompanyingdrawings illustrating embodiments thereof and shall thereafter point outmy invention in claims.

Figure 1 is a face view of a portion of a sheet of sheet lathing.

Fig. 2 is an enlarged cross-section includ ing one of the strengtheningand stiifening strips.

Fig. 3 is a similar view showing a modilied form of strengthening andstiifening strip.

The sheet lathing as shown comprises an 'of absorbent paper or otherfibrous or suitable material adapted to hold plaster, an inner layer 3of paper or cardboard or any suitable sheet material, and an adhesive orcement 2 to hold the two lay-V ers together. In'practice the inner layer3 is usually heavier and stiffer than the outer layer 1.

In the use of sheet lathing it is necessary to provide transversestrengthening and stiffening strips which are attached to the sheetingso as not to interfere with its fleXi- Specification ofLett'er'siIateilt.'

Patent-eenen. 291, 1919. Reneweainecember' 24e, 1911s.' serial N6;cefalea' bility. f These stripsl which are usuallyk made of metal-, arefplaced at suitablev distances fromf-each other on the sheetf'lathing,andA it is 'customaryto place- .them at distances about-' equal tothedistances between' the studding or ceiling beams to1 which they, are

to be; attached,thoughfof'course, this-dis-- tance can be variedlwhenever necessary;

2 As: shown in'cros's-isectionvin Fig.: 2 my:

strengthening. strip is in Contact with'and is secured to-the sheetlathing; Thestrength-f ening strip consists of a strip of metal havfold'4 andhavingfsidesle .arid7,=betli lof'which sides lie flat on the outerlayer 1 of the sheet lathing.

The fold 4 is bent first to one side and then to the other so as toproduce an undulating or staggered appearance. The sides thus bent overact to securely hold and lock the plaster in place. The stiifening stripis formed and attached to the outer layer 1 of the sheet lathing as apreliminary step in the manufacture of the sheet lathing inthe followingmanner: A fiat strip of metal of desired width is placed on the sheet ofabsorbent paper whichforms the outer layer 1 of the sheet lathing, andthe metal and paper are folded to form the fold 4, a paper fold 5 beingformed and securely held in the metal'fold 4. The fold 4 is then bent ashereinbefore described. After these strips are supplied tothe outerlayer 1, it is ready for use in making up the sheet lathing. The usualperforations 9 may be provided in the sheet lathing for more securelyholding the plaster.

Fig. 3 shows a modification of my invention and consists of astrengthening strip attached to the outer layer 1 by boX-plait like foldS, both sides of the fold being adapted to securely lock and hold theplaster in Iplace.

t is obvious that various modifications may be made in the constructionshown in the drawings and above particularly described within theprinciple and scope of my invention.

I Claim:

1. Sheet lathing consisting of two layers of paper having an adhesivebetween them, and transverse strengthening strips secured to one of thelayers of paper by folds in the strengthening strips inclosing andclamping within them folds in the layer of paper.

2. Sheet lathing consisting of an inner layer of non-metallic material,an outer layer of fibrous material, an adhesive between them, andtransverse metallic strengthening strips secured to the outer layer byfolds in the strengthening strips inclosing and clamping within themfolds in the outer layer.Y

3. Sheet lathing consisting of an inner layer of non-metallic material,`an outer layer of fibrous material, anV adhesive between them, andtransverse metallic strengthening strips secured to the layer of fibrousmaterial by Afolded portionsl inclosing. folds in thelayer of fibrousmaterial, such folded portions overhanging to hold the plaster.

4. Sheet lathing consisting ofV an inner layer of non-metallic material,an outer layer ofy fibrous material, an adhesive be-J tween them, and'transverse metallic strength-r ening strips secured to the layer ofbrous material by folded portions inclosing folds in the layer offibrous material, such folded Copies of this patent may be obtained forstrips to hold the plaster.

5. Sheet lathing consisting of two layers of aper having an adhesivebetween them, and) transverse metallic strengthening strips secured toone of the layers of paper by folds Vin the strips inclosing folds inthe layer of paper, the folds in the strips. over-hanging to hold theplaster.

6. Sheet lathing consisting of two layers of saper having anV adhesivebetweenrthe'm, antransverse metallic strengthening strips secured to oneof the layers ofpaper by folds in the strips inclosing folds in thelayer of paper, the folds in the strips over' hanging onbothsides of thestripstohold Y the plaster. Y

YIntestimony whereof I have ailXed Vmy signature. e Y WILLIAM GERAERDTS.

ve cents each, by addressing the Commissioner of Patents, i Washington,D. C.

